What year Triumph Speed Triple 955i is most reliable?

Based on MOT first-test pass rates, the 2003 Triumph Speed Triple 955i has the highest pass rate at 89.4%, out of 201 vehicles tested.

What are the most common Triumph Speed Triple 955i MOT failures?

The most common Triumph Speed Triple 955i MOT failures vary by year. Check the individual year pages for detailed defect breakdowns — links in the table above.

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Triumph Speed Triple 955i — Reliability by Year

1,079 vehicles · MOT data 1999–2004 · first-test pass rates

This page shows MOT first-test pass rates for each year the Triumph Speed Triple 955i was manufactured — click any year to explore that cohort in detail. Trying to decide which year to buy? See the full buying guide →

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Best pass rate year

2003

89.4% pass rate · 201 vehicles

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Lowest pass rate year

2000

85.2% pass rate · 154 vehicles

Year	Pass rate	Avg mileage	Vehicles
2004	88.9%	16,126 mi	191
2003	89.4%	16,824 mi	201
2002	88.0%	16,435 mi	181
2001	86.2%	18,777 mi	177
2000	85.2%	21,479 mi	154
1999	85.8%	22,132 mi	175

Which year Triumph Speed Triple 955i is most reliable?

MOT pass rate by year of manufacture — averaged across each vehicle's lifetime of tests.

Tests range from an average of 16,126 miles (newest year) to 22,132 miles (oldest year). Older years naturally accumulate more tests at higher mileages — see the mileage-normalised breakdown →

Trying to decide which year to buy?

We've done the full analysis — which years to look for, which to avoid, and where to find the best value for reliability on a Triumph Speed Triple 955i.

See the buying guide →

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Check any UK registration — free MOT history and risk insights.